From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Requesting the procurement of a 2-note Bosch horn for comparison with a single-note horn.
| Identifier | ExFiles\Box 59\3\ Scan056 | |
| Date | 7th June 1929 | |
| X1064 X 6031. To ROY.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG7.6.29. Will you please get a 2-note Bosch horn at the same time as the single-note horn. We will then keep the horn we find to be the most suitable. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||